4a) Outer Thickness - By default you will have two sets of borders on the image. This setting controls the thickness of the outer border. 4b) Inner Thickness - Controls only the inner border. Set this all the way to 0% if you'd like to only have one border for your image 4c) Corner Radius - Adjust this slider to have a rounded effect around your image 4d) Caption Space - Adjust this slider to create room for a caption beneath your image. This is a cool way to get the effect of an instant photo around your image.